package demo1;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class CardList {

    private static final String[] SUITS = {"♦" ,"♥" , "♠" , "♣"};


    public static List<Card> buyCards(){
        List<Card> list = new ArrayList<>();
        for (int i = 0; i < SUITS.length; i++) {
            for (int j = 1; j <= 13; j++) {
                //String suit = SUITS[i];
                //int rank = j;
                Card card = new Card(SUITS[i] , j);
                list.add(card);
            }
        }
        return list;
    }


    public static void shuffle(List<Card> list){
        Random random = new Random();
        for (int i = list.size() - 1; i > 0 ; i--) {
            int index = random.nextInt(i);
            swap(list , i ,index);
        }
    }


    public static void swap(List<Card> list , int i , int j){
        Card tmp = list.get(i);
        list.set(i , list.get(j) );
        list.set(j , tmp);
    }

    public static void main(String[] args) {
        List<Card> list = buyCards();
        System.out.println(list);

        shuffle(list);
        System.out.println(list);

        List<List<Card>> hand = new ArrayList<>();


        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();
        List<Card> hand3 = new ArrayList<>();


        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);


        //i控制次数
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 3; j++) {
                //揭牌的逻辑
                Card card = list.remove(0);
                hand.get(j).add(card);
            }
        }
        System.out.println("第一个人的牌 " + hand.get(0));
        System.out.println("第二个人的牌 " + hand.get(1));
        System.out.println("第三个人的牌 " + hand.get(2));

        System.out.println("剩下的牌" + list);


    }
}
